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Home >> Volkswagen >> 1982 >> Rabbit Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Specifications >> Tune-Up - 4 CYL >> Idle Speed & Mixture >> Vanagon
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Idle Speed & Mixture: Vanagon

  1. With engine at normal operating temperature, connect CO tester at probe receptacle on exhaust pipe in front of catalytic converter. Connect a tachometer to engine.
  2. Adjust idle screw until idle speed is correct. Check CO reading. On California models turn engine off and disconnect oxygen sensor plug. Disconnect idle stabilizer plugs and connect together.
  3. On all models, remove intake air sensor. Center punch the plug in CO adjusting hole. Using a 3/32" drill bit, drill hole in center of plug 9/64-5/32" deep. Remove any metal shavings.
  4. Screw in 1/8" sheet metal screw and remove plug with screw, using pliers. Reinstall intake air sensor. Start engine and adjust CO. Turn engine off and drive in new adjusting plug flush with air intake sensor. Reconnect other plugs and remove test equipment.
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